Panasonic 576HD line access issue

[NWTelTech]

Hello,

Here's a weird one. Replaced an old Panasonic DBS 824 with a not-as-old 576HD. I reinitialized the system, did the basic programming and connected two analog lines and the phones. Everything looked good until the line keys stopped working. They light up when a call comes in. I can manually grab a line by dialing 8801 & 8802 but when I press the line key, it beeps and says Restricted. Any DBS/576 peoples out there that might have a clue as to how to resolve this?

Thanks!

Grant